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[Sean Dague <sean@xxxxxxxxx>]

** Changed in: nova
       Status: Incomplete => Opinion

** Changed in: nova
     Assignee: Gary Kotton (garyk) => (unassigned)

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https://bugs.launchpad.net/bugs/1303481

Title:
  nova.scheduler.host_manager should cache CONF values

Status in OpenStack Compute (Nova):
  Opinion

Bug description:
  Performance improvement is possible by caching the values from the
  global CONF object that are repeatedly access, including
  CONF.scheduler_default_filters and CONF.scheduler_default_filters (see
  patch here:
  https://review.openstack.org/#/c/85594/3/nova/scheduler/host_manager.py)
  and CONF.scheduler_weight_classes.

  Avoiding CONF lookups where possible is just good practice.

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